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Your doctor prescribed a continuous passive motion (CPM) machine to use after surgery. The CPM machine is attached to a knee or other limb on which the surgery was performed. While you relax, the machine constantly moves the knee or other limb through a range of motions for a period of time. CPM is used to prevent joint stiffness, relieve pain, and regain normal motion. The CPM has supportive padding, a power supply, and a frame that adjusts to your body. Here’s what you need to know about home care.

Home Care

Use the machine settings and make any adjustments as directed by your doctor.

Use your machine 2-10 hours a day, for 2 hours at a time (more or less as tolerated and directed by your doctor).

Call your doctor when you think you can stop using the machine completely. This is usually when your arm or leg can reach an extended (straight) position or when you can bend your arm or leg to the degree your doctor recommended.

Use pain medication as directed by your doctor.

Follow any special instructions given to you by your doctor. If you feel pain, stop the exercise. If the pain continues after stopping, call your doctor.